A HNO3 solution has a sp.gr. of 1.42 and is 70.0 % (w/w) HNO3. Express its concentration in (a) molality (b) in Molarity (c) how many ml of this solution is needed to prepare 250. mL of 1.00 M HNO3? (d) how many mL of 1.00 M NaOH is needed to neutralize 25.0 ml of 1.00 M HNO3?

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.